The subgroup analysis for tumor type demonstrated that elevated FOXD2-AS1 expression was associated with a poor OS in patients with digestive tumors (OS: HR = 1.43, 95% CI = [1.18, 1.68], P<0.05, Figure 4A) and other tumors (OS: HR = 1.65, 95% CI = [1.22, 2.08], P<0.05, Figure 4A), but not in the respiratory system (OS: HR = 1.17, 95% CI = [0.97, 1.37], P>0.05, Figure 4A), the female reproductive system (OS: HR = 1.47, 95% CI = [0.95, 3.08], P>0.05, Figure 4A), or the nervous system (OS: HR = 1.48, 95% CI = [0.95, 2.00], P>0.05, Figure 4A). This evidence concerns the gene FOXD2 and digestive system neoplasm.